811680861711 has 8 divisors (see below), whose sum is σ = 1083100757760. Its totient is φ = 540690770072.

The previous prime is 811680861683. The next prime is 811680861713. The reversal of 811680861711 is 117168086118.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 811680861711 - 2⁵ = 811680861679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811680861713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107446695 + ... + 107454248.

It is an arithmetic number, because the mean of its divisors is an integer number (135387594720).

Almost surely, 2^811680861711 is an apocalyptic number.

811680861711 is a deficient number, since it is larger than the sum of its proper divisors (271419896049).

811680861711 is a wasteful number, since it uses less digits than its factorization.

811680861711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214902205.

The product of its (nonzero) digits is 129024, while the sum is 48.

The spelling of 811680861711 in words is "eight hundred eleven billion, six hundred eighty million, eight hundred sixty-one thousand, seven hundred eleven".